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CVE-2026-121771VulnerabilityPublished

Insertion of Sensitive Information Into Sent Data vulnerability in PublishPress Gutenberg Blocks advanced-gutenberg

Source GCVE Database

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Authoritative record:CVE-2026-121771· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium : upgrade to 3.7.7 when convenient.

Data as of 13 Nov 2026, 16:50 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Patchstack)CVSS 3.15.3
Patch
Available – fixed in 3.7.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade Gutenberg Blocks to 3.7.7.

Affected software

ProductAffectedFixed in
Gutenberg Blocksadvanced-gutenbergAffected
  • <3.7.7
Fixed in
  • 3.7.7

AI-suggested

No specific mitigations are provided in the available data.

Description

A vulnerability in PublishPress Gutenberg Blocks (advanced-gutenberg) allows insertion of sensitive information into sent data, potentially exposing embedded sensitive data. This affects versions up to and including 3.7.6. The vulnerability has a medium severity with a CVSS score of 5.3.

References

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